diff --git a/packages/wyatt_analysis/.latest_version b/packages/wyatt_analysis/.latest_version
new file mode 100644
index 00000000..005119ba
--- /dev/null
+++ b/packages/wyatt_analysis/.latest_version
@@ -0,0 +1 @@
+2.4.1
diff --git a/packages/wyatt_analysis/.vscode/extensions.json b/packages/wyatt_analysis/.vscode/extensions.json
index 30cd2233..bc053a4b 100644
--- a/packages/wyatt_analysis/.vscode/extensions.json
+++ b/packages/wyatt_analysis/.vscode/extensions.json
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022 WYATT GROUP
+ * Copyright (C) 2023 WYATT GROUP
  * Please see the AUTHORS file for details.
  * 
  * This program is free software: you can redistribute it and/or modify
diff --git a/packages/wyatt_analysis/README.md b/packages/wyatt_analysis/README.md
index bd675c4a..28b5244d 100644
--- a/packages/wyatt_analysis/README.md
+++ b/packages/wyatt_analysis/README.md
@@ -20,10 +20,18 @@
 
 ![SDK: Dart & Flutter](https://img.shields.io/badge/SDK-Dart%20%7C%20Flutter-blue?style=flat-square)
 
-This package provides lint rules for Dart and Flutter which are used at [Wyatt](https://wyattapp.io) and [Wyatt Studio](https://wyatt-studio.fr). For more information, see the complete list of options in **lib/analysis_options.2.4.0.yaml**.
+This package provides lint rules for Dart and Flutter which are used at [Wyatt](https://wyattapp.io) and [Wyatt Studio](https://wyatt-studio.fr). For more information, see the complete list of options in **lib/analysis_options.2.4.1.yaml**.
 
 **Note**: This package was heavily inspired by [pedantic](https://github.com/dart-lang/pedantic), [Very Good Analysis](https://github.com/VeryGoodOpenSource/very_good_analysis) and the official [flutter_lints](https://pub.dev/packages/flutter_lints).
 
+## Adding Wyatt Analysis to your project
+
+Using CLI:
+
+```sh
+dart pub add wyatt_analysis:2.4.1 --dev --hosted-url=https://git.wyatt-studio.fr/api/packages/Wyatt-FOSS/pub/
+```
+
 ## Usage
 
 To use the lints, add a dependency in your `pubspec.yaml` :
@@ -31,7 +39,7 @@ To use the lints, add a dependency in your `pubspec.yaml` :
 ```yaml
 wyatt_analysis:
     hosted: https://git.wyatt-studio.fr/api/packages/Wyatt-FOSS/pub/
-    version: 2.4.0
+    version: 2.4.1
 ```
 
 Then, add an include in `analysis_options.yaml` :
@@ -49,13 +57,13 @@ include: package:wyatt_analysis/analysis_options.flutter.yaml
 If you wish to restrict the lint version, specify a version of `analysis_options.yaml` instead:
 
 ```yaml
-include: package:wyatt_analysis/analysis_options.flutter.2.4.0.yaml
+include: package:wyatt_analysis/analysis_options.flutter.2.4.1.yaml
 ```
 
 If you just want **Dart** version:
 
 ```yaml
-include: package:wyatt_analysis/analysis_options.2.4.0.yaml
+include: package:wyatt_analysis/analysis_options.2.4.1.yaml
 ```
 
 ## Suppressing Lints
@@ -109,10 +117,11 @@ To indicate your project is using `wyatt_analysis` → [![style: wyatt analysis]
 When you want to create a new version of the plugin. Before any modification, execute the following command to create new files:
 
 ```sh
-./new_version.sh <previous_version> <new_version>
+./new_version.sh <new_version>
 ```
-> Where `<previous_version>` is 2.4.0
 
+The previous version is automatically detected thanks to the `.latest_version` file.
+So `.latest_version` needs to be versioned!
 
 ## Notes
 
diff --git a/packages/wyatt_analysis/new_version.sh b/packages/wyatt_analysis/new_version.sh
index 625f89c5..2c40cb61 100755
--- a/packages/wyatt_analysis/new_version.sh
+++ b/packages/wyatt_analysis/new_version.sh
@@ -18,20 +18,12 @@
 
 usage="
 usage:
-    $(basename "$0") <previous_version> <new_version> -- create new analyzer files.
+    $(basename "$0") <new_version> -- create new analyzer files.
 
 where:
-    previous_version: last version, for example \`2.3.0\`
     new_version: new version, for example \`2.4.0\`"
 
-old=$1
-new=$2
-
-if [ -z "$old" ]; then
-   echo "previous_version cannot be null"
-   echo "${usage}"
-   exit 1
-fi
+new=$1
 
 if [ -z "$new" ]; then
    echo "new_version cannot be null"
@@ -43,6 +35,19 @@ SCRIPT_PATH="${BASH_SOURCE:-$0}"
 ABS_SCRIPT_PATH="$(realpath "${SCRIPT_PATH}")"
 ABS_DIRECTORY="$(dirname "${ABS_SCRIPT_PATH}")"
 
+LATEST_VERSION="${ABS_DIRECTORY}/.latest_version"
+
+# Read latest version
+if [ -e "$LATEST_VERSION" ]; then
+   old=$(cat "$LATEST_VERSION")
+   echo "> latest package version is: $old"
+   echo "> new package version is: $new"
+else
+   echo "latest version is not set"
+   echo "create a file named \`.latest_version\` in the root of the project"
+   exit 1
+fi
+
 LIB="${ABS_DIRECTORY}/lib/wyatt_analysis.dart"
 OPTIONS="${ABS_DIRECTORY}/lib/analysis_options.yaml"
 OLD_OPTIONS="${ABS_DIRECTORY}/lib/analysis_options.${old}.yaml"
@@ -52,6 +57,7 @@ OPTIONS_FLUTTER="${ABS_DIRECTORY}/lib/analysis_options.flutter.yaml"
 OLD_OPTIONS_FLUTTER="${ABS_DIRECTORY}/lib/analysis_options.flutter.${old}.yaml"
 NEW_OPTIONS_FLUTTER="${ABS_DIRECTORY}/lib/analysis_options.flutter.${new}.yaml"
 
+
 if [ ! -e "$OLD_OPTIONS" ]; then
    echo "analysis_options.${old}.yaml doesn't exists"
    echo "${usage}"
@@ -91,7 +97,7 @@ sed -e "s/${old}/${new}/g" "README.md" > tempfile.tmp
 mv -f tempfile.tmp "README.md"
 
 echo "
-# Copyright (C) 2022 WYATT GROUP
+# Copyright (C) 2023 WYATT GROUP
 # Please see the AUTHORS file for details.
 #
 # This program is free software: you can redistribute it and/or modify
@@ -111,7 +117,7 @@ include: package:wyatt_analysis/analysis_options.${new}.yaml
 " > "${OPTIONS}"
 
 echo "
-# Copyright (C) 2022 WYATT GROUP
+# Copyright (C) 2023 WYATT GROUP
 # Please see the AUTHORS file for details.
 #
 # This program is free software: you can redistribute it and/or modify
@@ -130,4 +136,7 @@ echo "
 include: package:wyatt_analysis/analysis_options.flutter.${new}.yaml
 " > "${OPTIONS_FLUTTER}"
 
+# Update latest version
+echo "${new}" > "$LATEST_VERSION"
+
 exit 0